What is the MOST common type of mutation involving single base pairs?
A. frameshift mutation
B. nonsense mutation
C. missense mutation
D. base substitution
Answer: D. base substitution
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As observed in animal stem cells, plant stem cells are able to
A. exist as mature cells. B. produce nutrients for other cells. C. remain undifferentiated but can divide to produce cells that generate new tissues. D. fight microbial invaders by becoming mobile and phagocytic.
Which of the following is the correct
complementary bonding of nitrogen containing bases in DNA?
a. adenine and cytosine. b. adenine and guanine. c. cytosine and thymine. d. guanine and cytosine. e. guanine and thymine.
Answer the following statements true (T) or false (F)
1.Teeth are mineralized structures for holding and breaking up food. 2.When cleaning up from lab, you are asked to place two intestinal tracts in the appropriate bins. You would put the shorter one in a bin marked "herbivore" and the longer one in a bin marked "carnivore." 3.An autotroph obtains the energy it needs to maintain homeostasis from the sun. 4.A heterotroph obtains the energy it needs to maintain homeostasis from the sun. 5.Endotherms need more energy than ectotherms since they must do more metabolic work to maintain body temperature.
Which essential process do all multicellular organisms complete to create new tissue?
A. mitosis B. photosynthesis C. sexual reproduction D. asexual reproduction